//单个根元素 props传值
Vue.component('blog-post', {
template: '<div class="menu_left"><ul><li v-for="post in posts"><a :href="post.value" :class="post.dclass">{{post.title}}</a> </li></ul> </div>',
  props: ['posts'],	
 data:function(){
	return{
		message:'hello world'
	} 
 }
})